The Removal of Antibiotic Resistant Bacteria and Antibiotic Resistance Genes by Sulfidated Nanoscale Zero-Valent Iron Activating Periodate: Efficacy and Mechanism DOI

Liang Li,

Guosheng Zhang,

Xuening Dai

et al.

Published: Jan. 1, 2023

Antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) have drawn much more attention due to their high risk on human health ecosystem. In this study, the performance of sulfidated nanoscale zero-valent iron (S-nZVI)/periodate (PI) system toward ARB inactivation ARGs removal was systematically investigated. The S-nZVI/PI could realize complete 1 × 108 CFU/mL kanamycin, ampicillin, tetracycline-resistant E. coli HB101 within 40 min, meanwhile, possessed ability remove intracellular (iARGs) (including aphA, tetA, tnpA) carried by HB101. Specifically, tnpA after min reaction 0.31, 0.47, 0.39 log, respectively. reactive species attributed were HO• O2•−, which cause destruction morphology enzyme system, leakage substances, damage iARGs. Moreover, influence dosage PI S-nZVI, initial concentration HB101, as well co-existing substance (such HCO3–, NO3–, humic acid (HA)) its corresponding iARGs also conducted. It found that S-nZVI low enhance disinfection system. presence HA in showed inhibiting role removal. Overall, study demonstrates superiority

Language: Английский

Peracetic acid activation by natural magnetite for bisphenol A degradation: Performance and degradation mechanism DOI

Huibin Niu,

Xiang Liu, Cilai Tang

et al.

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 64, P. 105611 - 105611

Published: June 11, 2024

Language: Английский

Citations

2

Enhancement of microbicidal efficacy of chemical disinfectants when combined with ultrasound technology DOI Creative Commons

Antonio Biasi,

Mirella Gionta,

Federica Pisa

et al.

Journal of Applied Microbiology, Journal Year: 2024, Volume and Issue: 135(3)

Published: Feb. 19, 2024

Abstract Aims This study investigated the antimicrobial efficacy of ultrasound technology (US) in combination with two different disinfectants (Disinfectant A and Disinfectant B), containing peracetic acid (PAA) quaternary ammonium compounds (QACs), respectively, against sporigenic pathogens, Aspergillus brasiliensis Bacillus subtilis. Methods results The microbicidal activity coupled treatment was compared use alone, disinfection strategies evaluated by log reduction population microorganism inoculated onto stainless-steel surface. resulted a 5.40 3.88 + US) A. B. subtilis, at 850 500 ppm PAA, to 265 122 only). For B, US, showed logarithmic 5.04 4.79 subtilis 078% v v−1 392% QACs, vs. 1.58 1.64 B Moreover, no colonies or not statistically significant growth observed within US bath disinfectant. Conclusions greatly enhanced when used this also makes it possible avoid overuse chemicals for disinfection.

Language: Английский

Citations

1

Trends in Food Pathogens Risk Attenuation DOI Creative Commons

Elisabeta Elena Popa,

Elena Ungureanu, Mihaela Geicu-Cristea

et al.

Microorganisms, Journal Year: 2023, Volume and Issue: 11(8), P. 2023 - 2023

Published: Aug. 6, 2023

Foodborne pathogens represent one of the most dangerous threats to public health along food chain all over world. Over time, many methods were studied for pathogen inhibition in food, such as development novel packaging materials with enhanced properties microorganisms’ growth (coatings, films) and use emerging technologies, like ultrasound, radio frequency or microwave. The aim this study was evaluate current trends industry pathogenic preservation two directions, namely technology used processing development. Five technologies discussed study, high-voltage atmospheric cold plasma (HVACP), High-Pressure Processing (HPP), microwaves, (RF) heating ultrasound. These proved be efficient reduction microbial loads different products. Further, a series studies performed, related material development, by using antimicrobial agents natural extracts, bacteriocins nanoparticles. wide range microorganisms, including Gram-negative Gram-positive bacteria, fungi yeasts.

Language: Английский

Citations

1

Peracetic Acid Activation by Natural Magnetite for Bisphenol a Degradation: Performance and Degradation Mechanism DOI

Huibing Niu,

Xiang Liu, Cilai Tang

et al.

Published: Jan. 1, 2024

Advanced oxidation processes based on activated peracetic acid (PAA) have been widely used in water treatment. In this study, magnetite was first employed PAA activation for Bisphenol A (BPA) degradation. The results showed that the magnetic/PAA system degraded 94.6% BPA 60 min at neutral pH (pH=6.7), exhibiting a higher rate constant (kobs=0.051 min-1) than or alone. X-ray photoelectron spectroscopy (XPS) proved ≡Fe(II) and surface hydroxyl group (OOH) were dominant active sites, which promoted electron transfer between magnetite, PAA, BPA. According to scavenging experiments paramagnetic resonance (EPR) spectrum, main reactive oxygen species responsible degradation include organic radicals(·CH3COOO), Hydroxyl radical(·OH) singlet (1O2). pathway determined by LC-MS analysis, toxicity of intermediates evaluated ECOSAR wheat seed growth inhibition experiment. addition, magnetite/PAA presented good adaptability under both acidic conditions, demonstrating efficient even presence complex matrices such as Cl−, NO3− humic bodies while HCO3- H2PO4- inhibited This study not only reveals mechanism activating but also provides new idea applying PAA-based AOPs remove micropollutants wastewater.

Language: Английский

Citations

0

Analysis of Antimicrobial Mechanism and Water Disinfection Application of Long-Term Efficient Cao/Zno Composite DOI
Qisheng Wang,

Qing Cai,

Guanbin Wen

et al.

Published: Jan. 1, 2024

In this work, the prepared hexagonal prismatic CaO/ZnO composites exhibit efficient and long-lasting antimicrobial effects. The results of density functional theory calculations optical property tests indicate that have best electron-hole separation efficiency. Scavenger experiments revealed reactive oxygen species (ROS) bactericidal mechanism in dominated ionic mechanism. degree lipid peroxidation bacterial respiratory chain dehydrogenase activity assays determined ROS produced by acted as an agent against E. coli, enhancing damage to interior exterior coli. long-term experiments, pH changes, scavenger were used explain After alkaline properties decreased, percentage increased more compared pure CaO ZnO. three sponges with tested for their performance found strong performance, but test cycle-stable it was only CaO/ZnO@PU had maintained excellent five testing cycles, which also reflected good actual filtration experiments. Therefore, is a highly material great potential practical applications such water disinfection.

Language: Английский

Citations

0

Comparative study of synergistic antibacterial activity of ciprofloxacin-capped gold nanoparticles under different ultrasound frequency DOI

Xiu Ning,

Xiaofang Wang,

Chenyu Lang

et al.

Microbial Pathogenesis, Journal Year: 2024, Volume and Issue: 196, P. 106930 - 106930

Published: Sept. 12, 2024

Language: Английский

Citations

0

Food spoilage fungi: Main agents, sources and strategies for control DOI
Marina Venturini Copetti, Angélica Olivier Bernardi, Marcelo Valle Garcia

et al.

Advances in food and nutrition research, Journal Year: 2024, Volume and Issue: unknown, P. 475 - 518

Published: Oct. 29, 2024

Language: Английский

Citations

0

The Removal of Antibiotic Resistant Bacteria and Antibiotic Resistance Genes by Sulfidated Nanoscale Zero-Valent Iron Activating Periodate: Efficacy and Mechanism DOI

Liang Li,

Guosheng Zhang,

Xuening Dai

et al.

Published: Jan. 1, 2023

Antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) have drawn much more attention due to their high risk on human health ecosystem. In this study, the performance of sulfidated nanoscale zero-valent iron (S-nZVI)/periodate (PI) system toward ARB inactivation ARGs removal was systematically investigated. The S-nZVI/PI could realize complete 1 × 108 CFU/mL kanamycin, ampicillin, tetracycline-resistant E. coli HB101 within 40 min, meanwhile, possessed ability remove intracellular (iARGs) (including aphA, tetA, tnpA) carried by HB101. Specifically, tnpA after min reaction 0.31, 0.47, 0.39 log, respectively. reactive species attributed were HO• O2•−, which cause destruction morphology enzyme system, leakage substances, damage iARGs. Moreover, influence dosage PI S-nZVI, initial concentration HB101, as well co-existing substance (such HCO3–, NO3–, humic acid (HA)) its corresponding iARGs also conducted. It found that S-nZVI low enhance disinfection system. presence HA in showed inhibiting role removal. Overall, study demonstrates superiority

Language: Английский

Citations

0